| Patent Number |
Title Of Patent |
Date Issued |
| 5629356 |
A-aminoacetophenones as photoinitiators |
May 13, 1997 |
| Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization |
| 5554663 |
.alpha.-aminoacetophenones as photoinitiators |
September 10, 1996 |
| Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization |
| 5534629 |
.alpha.-aminoacetophenones as photoinitiators |
July 9, 1996 |
| Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization |
| 5510539 |
Liquid photoinitiator mixtures |
April 23, 1996 |
| Liquid highly active photoinitiators are obtained by dissolving a solid photoinitiator of the titanocene type in liquid photoinitiators of the acetal or ketal type. The liquid mixtures have a long dark storage stability. |
| 5288917 |
Liquid photoinitiator mixtures |
February 22, 1994 |
| Liquid highly active photoinitiators are obtained by dissolving a solid photoinitiator of the titanocene type in liquid photoinitiators of the acetal or ketal type. The liquid mixtures have a long dark storage stability. |
| 5106722 |
Titanocenes, the use thereof, and N-substituted pyrroles |
April 21, 1992 |
| Titanocenes containing two 5-membered cyclodienyl groups, for example cyclopentadienyl, and one or two 6-membered carbocyclic or 5- or 6-membered heterocyclic aromatic rings which are substituted by a fluorine atom in at least one of the two ortho-positions to the titanium-carbon bon |
| 5095044 |
Oligomeric benzil ketals and their use as photoinitiators |
March 10, 1992 |
| Compounds of the formula I ##STR1## in which n is 1-30 and X, Y, R, Ar.sup.1 and Ar.sup.2 are as defined in claim 1 can be prepared by reaction of a benzil dialkyl ketal with a diol. Depending on the molar ratio of the two reaction components, products having a different polycond |
| 5077402 |
Novel alpha-aminoacetophenones as photoinitiators |
December 31, 1991 |
| Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization |
| 5026625 |
Titanocenes, the use thereof, and n-substituted fluoroanilines |
June 25, 1991 |
| Titanocenes containing two 5-membered cyclodienyl gropus, for example cyclopentadienyl, and one or two 6-membered carbocyclic or 5- or 6-membered heterocyclic aromatic rings which are substituted by a fluorine atom in at least one of the two ortho-positions to the titanium-carbon bon |
| 5008302 |
Titanocenes, the use thereof, and N-substituted pyrroles |
April 16, 1991 |
| Titanocenes containing two 5-membered cyclodienyl groups, for example cyclopentadienyl, and one or two 6-membered carbocyclic or 5- or 6-membered heterocyclic aromatic rings which are substituted by a fluorine atom in at least one of the two ortho-positions to the titanium-carbon bon |
| 4960746 |
Liquid photoinitiator mixtures |
October 2, 1990 |
| Liquid, highly active photoinitiators are obtained by dissolving a solid photoinitiator of a titanocene type in liquid photoinitiators of the type of the .alpha.-hydroxy- or .alpha.-amino-acetophenones or in a liquid mixture of an .alpha.-hydroxy- or .alpha.-aminoacetophenone photocuring |
| 4950795 |
Oligomeric benzil ketals and their use as photoinitiators |
August 21, 1990 |
| Compounds of the formula I ##STR1## in which n is 1-30 and X, Y, R, Ar.sup.1 and Ar.sup.2 are as defined in claim 1 can be prepared by reaction of a benzil dialkyl ketal with a diol. Depending on the molar ratio of the two reaction components, products having a different polycond |
| 4837350 |
Process for the preparation of benzoin sulfonates |
June 6, 1989 |
| Benzoin esters of aromatic sulfonic acids can be obtained in high yield from benzoin and the respective sulfonyl halide in molar amounts of a base by carrying out the reaction at low temperature in an organic solvent with the addition of water. Aqueous NaOh or KOH can be used as base in |
